Collocations for rich - adj.

be, feel, look
become, get, grow
people who want to get rich quickly

make sb
This discovery never made her rich.

extremely, fairly, very, etc.
enormously, fabulously, filthy (informal), immensely, incredibly, seriously, stinking (informal)
He's fabulously rich, one of the richest men in the world.
She's filthy rich, you know.

relatively
newly
a newly rich businessman

be

extremely, fairly, very, etc.
especially, exceptionally, extraordinarily, particularly, unusually
the exceptionally rich fishing grounds of the North Pacific

fairly, quite, relatively
potentially
culturally
a culturally rich nation

in
Oranges are rich in vitamin C.

be

very, wonderfully
The wine gives the dish a wonderfully rich aroma.

Rich is used with these nouns:
abundance, archive, aroma, array, assortment, baritone, brown, businessman, businesswoman, cake, chestnut, collection, colour, content, country, crimson, deposit, description, dessert, district, diversity, dividend, earth, experience, fabric, family, fare, farmer, flavour, folk, food, glow, harvest, heritage, history, imagination, industrialist, kid, land, laugh, lawyer, legacy, man, merchant, mix, mixture, nation, ore, parent, past, people, person, purple, red, region, repertoire, resource, reward, robe, sauce, scent, seam, shade, silk, smell, soil, source, suburb, taste, texture, tone, tradition, uncle, variety, vein, velvet, vocabulary, voice, widow, world